Agricultural products fresh-keeping pilot test temperature gradient ice house

Abstract

The invention relates to an agricultural product fresh-keeping pilot-scale experiment temperature gradient cold store, which has an upper layer and a lower layer, wherein the upper layer is a strong-cold-air static pressure chamber, the lower layer consists of a negative pressure uniform temperature buffer room and a plurality of gradient rooms, and each gradient room has an independent temperature control unit. A static pressure type powerful refrigeration hot air exchange system is adopted, the inside of the static pressure chamber is provided with an air cooler of a ceiling suspended refrigerator, and axial-flow ventilation fans arranged on the tops of the temperature gradient rooms and vertical air duct systems at four corners form a cold-hot air exchange general circulation. The ambient temperature of each temperature gradient room is automatically adjusted by adjusting the operation time of the fans. The tops of vertical air ducts at the four corners are all provided with air current one-way check valves to prevent hot air from flowing reversely into the static pressure chamber when the temperature gradient rooms supply the hot air. The cold store can meet different pilot-scale experiment requirements such as low temperature, high temperature and variable temperature for synchronously performing agriculture product fresh keeping, and can meet environmental conditions for simulating storage, transport, storage rack and common cold store precooling and perform fresh-keeping experiments under different atmosphere environmental conditions at the same time.

Description

technical field [0001] The invention belongs to a temperature gradient cold storage, in particular to a temperature gradient cold storage for agricultural product fresh-keeping pilot experiments widely used in scientific research, teaching and other units for storage and fresh-keeping of agricultural products. Background technique [0002] Temperature is one of the key factors for the preservation of agricultural products. Under different temperature conditions, the postharvest physiological metabolic aging speed and decay rate of agricultural products are quite different. The temperature coefficient Q of most agricultural products is 10 It is 2-3, that is, every time the temperature increases by 10°C, the postharvest physiological metabolic aging rate increases by 2-3 times, and some agricultural products are prone to chilling injury under inappropriate temperature conditions. Therefore, temperature gradient cold storage is an important means to study the physiological indi...

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Problems solved by technology

At present, there is no fresh-keeping storehouse that can meet the requirements of various environmental conditions at the same time, so as to achieve the preservation test under various conditions at the same time.

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